MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: look at this problem

  • To: mathgroup at
  • Subject: [mg74074] Re: look at this problem
  • From: "Jean-Marc Gulliet" <jeanmarc.gulliet at>
  • Date: Thu, 8 Mar 2007 04:42:53 -0500 (EST)
  • References: <>

On 3/5/07, Nabeel Butt <nabeel.butt at> wrote:
> Dear Mr Jean-Marc,
>          I want to determine the order of a differential expression for
> which i try to do:
> \!\(Plus[D[f[x, y, z], x] /. \(_\^\((x___)\)\)[___] -> x]\)
>       But this does not work.Any suggestions to my above code.
>         regards,
>           Nabeel

Hi Nabeel,

Look at the FullForm of the expression to see what pattern(s) really
match what you are looking for. For instance,

FullForm[D[f[x, y, z], x]]

FullForm[Derivative[1, 0, 0][f][x, y, z]]

D[f[x, y, z], x] /. Derivative[x_, ___][_][___] -> x



P.S. I have cross-posted your query to MathGroup.

  • Prev by Date: Re: Simplifying {0,0,0}.X.{0,0,0}
  • Next by Date: Re: How can I automate this problem in a mathematica notebook?
  • Previous by thread: Re: Multi-core Support in Mathematica 5.2
  • Next by thread: Factorizing...